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(No Model.)

i D. A. A. BUCK.

` WATCH MOVEMENT.

Patented Feb. 5 l884.

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lUNTTEn tTriTEs PATENT D. AZR@ A. BUCK, OF W'ATFJBBUI-t, CONXECIICUI, ASSIGXOB TO '.ll'll] VATEBBUBY VATCH CGMPAXY, OF SAME PLACE.

VJATCH-MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 293,143, dated February 5, 1884. Application filed September 10, N83. (No model.)

all whom, t 71mg/ concer/1,:

Beit known that I, D. AZR@ A. BUCK, of IVaterbury, in the county of New Haven, and in the State of Connecticut, have invent-ed eertain new and useful Improvements in IVatch- Movements; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompaing drawings, making a part of this specilication, in which- Figure lis a perspective view of the pillar-plate, top plate, balance-bridge, and winding-bridge separated from each other. Fig. 2 is a like view of said parts combined, and Figs. 3 and et are respectively sections upon lines a' .r and .e of Fig.

Letters of like name and hind refer to like parts in each of the figures.

The design of my invention is to simplify the construction, to increase the efficiency, and to lessen the expense of watch-movements, to which end it consists, principally, in a winding-bridge which is adapted to confine in place the winding-pinion,to support the balance-bridge, and to act as a pillar between and in connection with the pillar-plate and the top plate, substantially as and for the purpose hereinafter specified.

It consists, further, in the construction of the winding-bridge and its combination with the top and pillar plates and the balancebridge, substantially as and for the purpose hereinafter shown.

In the annexed drawings, A represents the pillar-plate of niy watch, which has the usual form, and is adapted to receive the time-train. At a suitable point adjacent to the windingtrain said plate is provided with a recess, a, that corresponds to a winding-pinion, B, and forms one-half of a bearing for the same, while at points substantially equidistant from each other and from said recess two pillars, a', are secured within said plate, near its periphery.

Fitted upon the plate A, between the balance-recess and the spring-barrel, is a winding-bridge, C, which has preferably the general shape shown in Fig. l, its outer edge extending nearly to and having the curve of the edge of said plate, while its side edges conform to the circles ot' said balance-recess and winding-barrel, and within its inner face is provided a recess, c, that corresponds to the recess c of said plate A, and in connection therewith forms a bearing for thc windingpinion B. The winding-bridge C is pret'- erably provided with one or more dowelpins, c', which lit into corresponding holes, a2, in' the plate A, and operate to insure the relative lateral positions of said plate and bridge; but, if preferred, said pins may be omitted, and any other usual ineans may be employed for securing the result named. The thickness of the bridge Ceci-responds to the height of the body of each pillar a, and upon t-he latter and said bridge is placed a top plate, D, which is held in pla-ce by means ot' two screws, d, that pass through the same into said pillars, and a screw, d', which passes through said plate D and said bridge C, and has its threaded end contained within the. pillar-plate A, said last-named -screw thus operating to confine said parts in relative positions. rIhe top plate, D, extends morethan one-halfthe distance across the winding-lnidge C, and upon the remaining portion ofthe latter is placed a balance-bridge, E, which is preferably doweled thereon, and is secured in position by means of a screw, c, that passes through said balance-bridge into said winding-bridge, or through the latter into the plate A, as may be preferred.

In consequence of the attachment of the balance-bridge E to the winding-bridge C, instead of to the pillar-plate A, said balance-bridge may be constructed from a thin plate of metal, and therefore is more easily made and more readily handled in set-ting up or taking down the watch than when constructed in the usual form, while from the form of said winding-bridge and its combination with said pillar-plate and the top plate, D, greater strength is secured, a less number of parts is required, and the cost of the watch is lessened.

Having thus fully set forth the nature and merits of my invention, what I claim as new isl. Awinding-bridge whichis adapted to conne in place the winding-pinion, to support the balance-bridge, and to aetas a pillar be- IOO tween, and in connection with the pillar-plate l lar-plate A, substantially as und fo1` the purund the Jrop plate, substantially as und for the pose set forth. purpose speced. In testimony that I claim the foregoing I 2. The Combination of the pillar-plate A, have hereunto set my hand this 20th (lay of prorgdl Wthlthe 1lerlss g, 1the Windng-pin- Muy, A. D. 1883. 1011 ewlnflngr1( ge ,1, mvngt erecess Y f c, und the top plate, D, substantially as and i D' AZR() A' BL Ch for the purpose shown. 1 IVtnesses:

3. In combination with the balance-bridge l 1o E, the windingbrclge C, secured upon tl1epil- I E. L. BRoXsoN, GEO. S. PRINDLE. 

